Spool for a string trimmer head



FIG. 1 is a front and top perspective view of a spool for a string trimmer head.

FIG. 2 is a top plan view of the spool for a string trimmer head of FIG. 1.

FIG. 3 is a bottom plan view of the spool for a string trimmer head of FIG. 1.

FIG. 4 is a front view of the spool for a string trimmer head of FIG. 1. The back view being the same as the front view; and,

FIG. 5 is a right elevation view of the spool for a string trimmer head of FIG. 1. The left elevation view being the same as the right elevation view. 

CLAIM The ornamental design for a spool for a string trimmer head, as shown and described. 